Holley EFI harness adjustment

The harnesses that Holley supply SUCK. Use the flying lead or the unterminated one shown above. The flying lead does not come with the terminals or connectors but if you have the depinning and crimping tools then just re-use the original connectors. Holley sells the terminals or you can get them from various places.

I don’t even bother with the supplied harness. Holley should give you the choice to use the flying lead in their kits because it sucks to spend another $300 on top of what you already spent.